SiC620R, SiC620AR
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Vishay Siliconix
S14-2189, Rev. A 03-Nov-14
8
Document Number: 63589
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ELECTRICAL CHARACTERISTICS
Test condition: V
IN
= 12 V, V
DRV
= V
CIN
= 5 V, ZCD_EN# = 5 V, V
OUT
= 1.8 V, L
OUT
= 250 nH (DCR = 0.32 mΩ), T
A
= 25 °C, natural convection
cooling (All power loss and normalized power loss curves show SiC620R and SiC620AR losses only unless otherwise stated)
Fig. 6 - Efficiency vs. Output Current
Fig. 7 - Power Loss vs. Output Current
Fig. 8 - Power Loss vs. Input Voltage
Fig. 9 - Safe Operating Area
Fig. 10 - Power Loss vs. Switching Frequency
Fig. 11 - Power Loss vs. Drive Supply Voltage
80
82
84
86
88
90
92
94
96
0 5 10 15 20 25 30 35 40 45 50 55
Efciency (%)
Output Current, I
OUT
(A)
Complete converter efciency
P
IN
= [(V
IN
x I
IN
) + 5 V x (I
VDRV
+ I
VCIN
)]
P
OUT
= V
OUT
x I
OUT
, measured at output capacitor
500 kHz
300 kHz
1 MHz
800 kHz
1 MHz
0
1
2
3
4
5
6
7
8
0 5 10 15 20 25 30 35 40 45 50 55
Power Loss, P
L
(W)
Output Current, I
OUT
(A)
800 kHz
500 kHz
300 kHz
I
OUT
= 30 A
0.9
0.95
1
1.05
1.1
1.15
1.2
4 6 8 1012141618
Normalized Power Loss
Input Voltage, V
IN
(V)
300 kHz
1 MHz
0
5
10
15
20
25
30
35
40
45
50
55
60
65
0 25 50 75 100 125 150
Power Output Purrent, IOUT (A)
PCB Temperature, T
PCB
(°C)
0.8
0.9
1
1.1
1.2
1.3
1.4
200 300 400 500 600 700 800 900 1000 1100
Normalized Power Loss
Switching Frequency, f
s
(kHz)
I
OUT
= 30 A
0.9
0.95
1
1.05
1.1
1.15
1.2
4 4.2 4.4 4.6 4.8 5 5.2 5.4 5.6
Normalized Power Loss
Drive Supply Voltage, V
DRV
(V)
I
OUT
= 30 A
